02 FS650 E low voltage issue

Hi all, I have a issue with my charging system where I'm getting a low voltage on the DC circuit at higher rpm.
I've replaced the original head, tail and indicators with led types. Indicators and head light were on the DC circuit and tail on the AC circuit. I'm pretty sure the issue was there before this was done.
I've looked through the forum and initially thought there was too much load for the reg rectifier, so I replaced it with a 140w two phase reg rectifier. I joined the two yellow phases from the stator to the new reg rectifier and the blue (seperate) to it as well. No luck though. I get 10-12vdc at idle and 6vdc at high rpm (no load)
What doesn't seem right is I get the same low voltage readings on the ac side (measuring at connections) to the reg rectifier from the stator.
But if I disconnect the reg rec and measure from the yellow's to blue I get 13-14vac at idle and 40vac at high rpm.

Im not too sure where to go from here. Any ideas?

Hi Zaga,

Yes two phase stator and I've got a two yellow wire input reg/rec.

It was from this forum that I got the idea to join the yellows together. So both coils are running in parallel which should give more Wattage.

I have started the bike and tested the yellow to blue wires seperate and get 13-40vac for each. I've also put a power source on the reg/rec and it's working fine.

Seems like my stator cannot take any load. But the ignition side is ok. Think I will have a closer look at the stator and flywheel.

Thanks